Also she/ they might just be curious. I have several tattoos and piercings (though not as many piercings as in my twenties) and my mom was always curious as to why a person gets this done. She would ask "so where does one get a tattoo"? She's never going to get one, she's just curious by nature.
Some of the things she's asked people have been translated as judgement or disapproval but knowing her and what she really wants to know, it's not a judgement. She is just inquisitive and genuinely interested in how and why things are the way they are and why we do the things we do. It's almost naive and innocent, sweet. I know not all people are as kind as my Mom (who is the greatest mom and the world is a better place because she's in it) but there is a chance that some people are just plain curious, gay, straight, orange with yellow polka dots, they just wanna know "why"??